Traction-wheel.



D. C. SLACHT.

TRACTION WHEEL.

nPPLacArfoN min ocr. ss sw 1,274, 1 lzltvnlvd J uy ISU, 1918.

L A ttornm.

UNITED sTATEs PATENT oEErcE.

DANIEL C. SLAGHT, OF

EASTON, PENNSYLVANIA, ASSIGNOR F ONE-HALF T0 PHILIP S.

DYEB, 0F PHILLIPSBURG, NEW JERSEY.

TEACTION-WHEEL.

Specification of Lettera Patent. Patented July 30, 1918.

Application filed October 18, 1916. Serial No. 126,254.

To all whom it may cof/Germ Be it known that I, DANiEL C. SLAGHT, a citizen of the United States, and a resi dent of Easton, county of Northampton, and State of Pennsylvania, have invented a certain new and useful Improvement in Traction-Wheels, of which the following is* la plify the construction of the device byreducing the number of parts and to cheapen the construction.

"These and further objects will more fully appear in the following specification and accompanying drawings considered together l or separately.

I have illustrated my invention in the accompanying drawings in which like reference characters designate corresponding parts in al1 of the several figures and in which- Figure 1 is adouble sectional view of my invention, the left halfbeing taken on the line (1f-a of Fig. 2 and the right half being taken on the line b-b of the same figure.

-Fig. 2 is a section taken on the line c-c of Fig. 1.

Fig. 3 is a detail rear elevation of a wheel and axle showing the sto mechanism.

F ig. 4 is adetail top vlew of the stop.

Figs. 5, 6 and 7 are dia rammatic views showing the operation o the Wheel and stolp mechanism; and

iig. 8 is a viewV similar to Fig. 2 but showing a modification. y

Referrin first to Figs. 1 to 7, 9 designates 4a dis shaped hub member having a concentric, annular flange 10 projecting from one' face thereof anda centrahcircular opening 11 therein. Surrounding andcarried by the Bange 10 is a second hub meinber `12 of circular form and having a central, circular opening 13 therein. The member l2 is provided with an internal recess 14 formed by Jthe outer wall of the member 12, the turned over portion 15 and the inturned por' on 16 of the member. Extending outwardly from the inner edge of the portion 16 is a` concentric flange 17 engaging the flange 10. The space between the members 9 and 12 outside of the flange 15 form a circular recess for the reception of a range of Spokes 18 which are retained in position by means of bolts 19 which also act to secure'the members 9 and 12 together.

Within the recess 14 is arranged a circular series of pins or shafts 2l) each of which carries a roller 21. The rollers form a cir cular rack or internal gear. It will be observed that the pins 20 are carried Wholly by the hiib member 12 and perform no function except that of supporting the rollers 21. The pins have a driving fit with the hub member 12 and do not in any manner coperate with the member 9 or the Spokes. The bolts 19 by means ofl which` the hub members and spokes are secured together are entirely independent 0f roller mounting devices and the hub may be shipped in knock down condition with the rollers 21 in place and may be assembled without dis' tur ing the rollers or their supports.

If desired the rollers 21 may be dispensed with. the teeth of the pinion caused to engage the pins 20 directly. The pin, in the latter case, may be cylindrical, or that portion thereof with which the pinion teeth engage may be of proper internal gear tooth shape. A cap n is secured in place over Y the opening 13.

A driving axle shaft 23 asses lthrough the openings 11 and 13 an is keyed or otherwise secured against rota.- tion on the axle shaft. A nut onthe end of the axle shaft retains the skein on shaft.

Keyed or otherwise secured to the skein 24 is a roller 25 which is adapted to engage the inside of the ange 10. The roller is less in diameter than is the chamber formed by the flange and consequently the roller and,axle shaft will always remain eccentric to the hub. A spur pinion 26 is ri diy secured to and concentric with the ub and the teeth of the pinion engage the rollers 21 forming the circular rack. Cheek plates 27H27 are carried on theskein one at each carries at its outer, tapered end a sleeve or skein 24 which side of the roller 25 and pinion 26, which take up wear. at these points. The skein 24 carries a brake drinn 28 which is therefore ri 'dly mounted on the axle shaft.

y ounteld within the openin 11 is a disk 29 which is provided with a ange 30 from which projects a radial linger 31. The disk has a se mental slot 32 through which the axle sha t projects. The disk is concentric with the hub and the slot permits eccentric planetar i movement of the hub relatively to the sha t for a movement of 180 degrees. The outer end of the linger 31 enga es a fork 33 which is rotatably/carried in a earing 34 mounted upon axle shaft. l

In Fig. 8 I show a modification wherein the axle supporting roller is divided and the pinion is carried between the portions of the roller. In the figure 9 designates a chambered hub which is closed by cover 12il secured in place by means of bolts 19El which also secures the spokes in osition.` Within the hub are two cylindrica surfaces ltr-10 with which engage two rollers 25-25 which have secured between them a. spur pinion 2G. The rollers and pinion form a unitary structure which is keyed to a skein 24B which in turn is made fast to the axhi.

shaft. Between the surfaces 10a-#10, is a cavity 14 which is greater in diameter than are the surfaces and in the cavity is arranged a circular rack composed `of anti friction rollers 91a with which the pinion engages. The slotted stop plate and the brake drum are identical with, and the operation of the device is exactly the same as in the structure shown in Figs. 1 to 8.

The operation of the device is as follows:

When the vehicle of which the invention forms a part is at rest the wheel is in the position shown in Fig. 1. If we assume that the vehicle is propelled by a four cylin der, 40 horse power motor the explosion in the first cylinder or 10 horse ower will be exerted to turn the axle. 'lhis power is not sufficient to start the load but will cause the pinion to rotate and, as the inertia 0f the load will prevent its movement alongl the supporting surface, the pinion will rotate relatively to the hub and wheel and up on the circular rack to the left. This will raise the Weight of the load and move it forward of the center of gravity of the wheel shown in Fig. 5. lhe explosion of the second lcylindeiwill raise the load higher and movldiit farther 'forward as inlig. t5. The

next `er:`.'plosion willearry the parts to the position shown in Fig. 7 and the firing of the fourth cylinder will ino-ve the parts still higher and farther forward. As the load moves forward without turning the wheel the leverage of pinion increases and should the' car be resting on a level surface the weightof the load will canse the rack to move with the pinion and rotate the Wheel. When the wheel rotates it will do so with- Vhavin out slipping and wear on the tire will he reduced to a minimum. When the car starts the pinion will move down to the position shown in Fig. 1 and the car will be driven with the parts in such position until an ob struction is encountered. When the huh is retarded b. the tire encountering an ohstruction tie pinion will climb upon the rack as before and the Weight of the load will help carry itself over such obstruction.

Should the car be at rest on a grade the early revolutions of the axle shaft will canse the load to climb until the angle of the ongagement of the pinion with the rack will equal the angle of the grade and the cnr will be in the same position relatively' to its supporting surface as if it were on An level. When running on a grade the pinion instead of swinging back to the position it assumes when traveling on a level will remain at the point where its effective angle counterbalances the grade.

If the resistance to the starting of the vehicle be so great that the pinion climbs to a position 9U degrees from that shown in Fig. 1 the axle shaft will reach the ond of the segmental slot in the stop disk 28 andF the pinion will remain n that position until the fly-wheel stores up enough energy to start the wheel. The stop prevents the pinion from climbing so high that it will fall from its engagement with the raelrthrough the attraction of gravity.

The weight of the vehicle will, when the car is running, be taken by the hub through the engagement of the roller 25 with the fiange 10 and not bythe teeth of the pinion and rack. The roller and its engaging snrfaeo with the single contact )reduce an antifriction device of ultimzit lt-,i1nplicity and is equally as effective as rows of balls or rollers.

I have shown and described my invention as applied to the driving wheel of an aulomobile, but it is obvious that it may be applied to non-driving wheels as well.

In accordance with the provisions of the patent statutes I have described the principle of m invention, together with the apparatus w ich I non7 consider to represent the best embodiment thereof, but I desire to have it understood that the apparatus shown is merely illustrative, and that the invention may be carried out in other ways. i

Iaving now described my invention what I claim as new and desire to secure by Letters Patent, is: v

1. A device of the character' described an'axle shaft, a toothed Wheel'car ried y the shaft, lcreasing inclosing the wheel, an internal gear carried in the oasing and in mesh with the toothed wheel, and a circular member on the axleshaft concentric with the toothed wheel and bearing on the casing.

2. A devicerof the character described,

, having an axle shaft, a toothed wheel carried on the shaft, a casing inclosing the wheel, there being a circular recess within the casing, an internal gear within the recess and in mesh with the toothed wheel, and a circular member concentric with and carried by the axle shaft, said member being eccentric with and bearing on the casing.

3. A device of the character described, having an axle shaft, a toothed wheel carried `by the shaft, a two part casing inclosing the wheel, there being a circular recess in one part of the casing, a circular series of teeth within the recess and in mesh with the toothed wheel, and a circular member concentric with and carried by the axle shaft, said member being eccentric with and bearing on the interior of the casing.

4. A device of the character described, having an axle shaft, a toothed wheel carried by theshaft, a two part casing inclosing the wheel, there being a circular recess in one part of the casing, a circular series of relatively movable teeth within the recess and in mesh with the toothed wheel, and a circular member concentric with and carried by the axle shaft, said member being eccentric with and bearing on the interior of the casing.

5. A device of the character described, having an axle shaft, a toothed wheel carried by the shaft, a two part casing inclosing the wheel, there being a circular recess in one part of the casing, a circular series of roller teeth within the recess and in mesh with the toothed wheel, and a circular member concentric with and carried by the axle shaft, said member being ec cent-ric with and bearing on the interior of' the casing.

6. A device of the character described, having an axle shaft, a toothed wheel carried by the shaft, a` casing having a cylindrical bore incloslng the'wheel, there bein a recess of greater diameter than the bore, an internal gear. carried in the recess and in mesh with the toothed wheel, and a circular member on the axle shaft concentric .with the toothed wheel and bearing on the casing.

7. A device of the character'described, having an axle shaft, a toothed wheel carried by the shaft, a. two partcasing inclusi the wheel, there being a circularvrecess 1n one part of the casing, a cylindrical bore in the other part of thecasing, a circular series of teeth within the recess and in mesh with the toothed wheel, and :i circular member concentric with and carried by the axle shaft, said member being eccentric with and bearing on the bore of the casing.

8. A device of the character described, having an axle shaft, a circular member carried by the shaft, a toothed wheel carried by and concentric with the member, a

hub member having a cylindrical bore surrounding and engagin the circular member and being eccentric t creto, a second hub member having a circular bore surroundingnnd eccentric with the toothed wheel, and a circular series of teeth within the last mentioned bore and in mesh with the toothed wheel.

9. A device of the character described, having an axle shaft, a toothed wheel carried on the shaft, a circular member carried by the shaft concentric with the toothed wheel, a casing surrounding the circular member and toothed wheel, a stop carried by the casing, and surrounding the axle shaft, there bein a segmental slot in the stop to permit p anetary movement of the axle in the casing and for limiting such movement.,

10. A device of the character described, having an axle shaft, a toothed wheel carried on the shaft, a circular member carried by the shaft concentric with the toothed wheel, a Icasing surrounding the circular meinber and toothed wheel, a stop carried by the casing, and surrounding the axle shaft, there bein a segmental slot in the' stop to permit p anetary movement of the axle in the caslng and for limiting such movement, and a connection between the stop and the axle shaft.

11. A device of the character described, having an axle shaft, a toothed wheel ca rried on the shaft, a circular member carried by the shaft concentric with the toothed wheel, a casing surrounding the circular member and toothed wheel, a .stop carried by the casing, and surrounding the axle shaft, there being a segmental slot in the stop to permit planetary movement of the axle in the casmgA and for limiting such .niovemena and a movable connection bef tween the stop and the axle'shaft.` 12. A device of the character described, f having an axle shaft, a toothed wheel carried on the shaft, a circular member carried by the shaft concentric with the toothed wheel, a casing surrounding the circular'V member andV toothed wheel, a cheek platek between the circular member and the casing," a cheek plate between the toothed wheel and the casing, a stop carried' by the casing and surrounding 4the axle shaft, there being a segmental slot in the stop to permit planetaryA movement of the axle in the casing and for miting such movement.

"13. A device of the character described, k having an axle shaft,'a circular member carried by the shaft, `a toothed Wheel carried by and concentric with the member, a hub member havin a cylindrical bore surrounding and engaglng the circular member and being eccentric thereto, a second hub member having a` circular bore surrounding and eccentr1c with the -toothed wheel and .concentric 130 `with the bore of the firsty mentiohed hnb member, and a circular series of teeth within the last` mentioned bore and in mesh with the toothed'wheel, and means for securing the hub members together.

14.A device of the cliniracter described, having an. axle shaft, a circular member carried by and concentric with the shaft. a toothed wheel carried by and concentric with the circular member, a hub section having a cylindrical bore surrounding and eccentric with relation to the circular member, a sccontl hub section surrounding the first men tioned section, there being a circular recess in the second member, said recess being concentric. with the bore and eccentric with and surrounding the. toothed wheel, a circular series of pins extending across the ret-ess and in mesh with the toothed wheel. and mean` for securing the hub members together.

15. A device oi" the character described. having an axle sli-.i ft, a circular member earried by and concentric with the shaft. a toothed wheel carried b v and concentric with the circular member, a hub section having a cylindrical bore surrounding and eccmric with relation to the. circular member. a sccond hub section surrounding the tirs-t mentioned section. there being a circular recess in the second member, said recess being concentric with the. bore. and eccentric with and surrounding the toothed wheel, a. circular series of pins extending across the recess and in mesh with the toothed wheel, there being a circumferential recess between the hub members, a range of spokes Seated in the recess, and means for securing the hub members and spokes together.

1G. A device of the character described, having an axle shaft. a toothed wheel carried by the shaft. a casing inclosing the wheel, an internal gear carried in the casing and in mesh with the toothed wheel, and a circular member on the axle shaft on each side of and concentric with the toothed Wheel and bearing on the casing.

, 17. A device of the character described, having an axle shaft, a toothed wheel carried on the shaft, a casing inclosing the wheel, a circular recess within the casing, an internal gear within the recess and in mesh with the toothed wheel, and a circular member on each side of and concentric with and carried by the axle shaft, said members being eccentric with and bearing on the casing.

18. A device, of the character described,

having an axle4 shaft, a toothed wheel carried "bythe shaft, a circular member on each side `of the toothed wheel, a hub member snrrounding the circular members and toothed wheel, said hub member having two circular tracks eccentric to and engaging the circular members, there being a circular recess between and of greater diameter than thge tracks and concentric therewith, a circulrr series of teeth extending aero` the recess and meshing with the toothed wheel. a sec ond hub member, there being a rirrom terential recess between the hub members. a range 'it spokes sented in the recess and hoh` tor sei-tiring' the hub members together and lo the spokes.

11|. device of the character described. having au axle shaft, a wheel, means carried by the shaft for driving the wheel, and :t member carried by and Supporting the slm l't b v engagement with the hub of the wheel.

20. A device of the character described. having an axle shaft. a wheel, means carried by the shaft for driving the wheely and a member carried by and concentrhI with the shaft and supporting the same by engagement with the hub olI the wheel.

2l. device of the character described. having an axle shaft. a wheel. means carried by the shaft for driving the wheel. and a member carried by and supporting the halt by a rollingl contact with the interior ot' the hub of the wheel.

22. device of the character described. having an axle shaft. a wheel, means carried by rthe shaft for driving the wheel, and a member carried by and concentric with the' shaft and supporting the same by a rolling contact with the interior of the hub of the wheel.

23. A device of the character described. having an axle shaft, a member carried b v and concentric with the shaft. a wheel. means carried by the shaft vfor drivingr the wheel, said mem .rer engaging the bore ol' the wheel hub and supporting the shaft b v a rolling r contact therewith, said mcnrber being of less diameter than the bol-cof the heb.

24. A device of the characterdescribed, having an axle Shaft, a wheel, means carried by the shaft for driving the wheel, means whereby the wheel may move relatively to the shaft, and means for limiting such movement.

25. A device of the character described, having an axle shaft a Wheel, means carried by the shaft for driving the wheel, means whereby the wheel may move relatively to the shaft, and means carried by the wheel for limiting such movement.

26. A device of the character described, having an axle shaft, a wheel, means carried by the shaft for driving the wheel. means whereby the wheel may move relatively to the shaft, and means surrounding the axle shaft for limiting such movement.

27. A device of thc character described, having an axle shaft, a wheel, means carried by the shaft for driving the wheel, means ,whereby the. wheel may move relatively to the shaft, and means carried by the wheel and surrounding the axle shaft for limiting such movement.

28. A device of the character described,

till

having :in :axle shaft, :i wheel, means carried b v the shaft For driving` the wheel, such driving' connection providing ineens whereby the sli-.ift may move relatively to the wheel nhile in driving relation therewith, :and menne; i'or limitingsuch reiative movement.

f?. A device of the character described, havingY :in nxle shaft, :t wheel. means carried b v Ihr shaft for drivinga the wheel, such driving ineens permitting relative movement of the wheel and shaft, and n member carried b v tlnwheel for limiting such relative movement.

30. A device ofthe character described, having :in axle Shaft, e Wheel, means cerrieil hy Ille shaft for driving the wheel, such driving;` means permiti ing relative movement of the wheei and shaft, und a member 4catrried llyhnd concentric with the wheel for limiting euch relative movement, said mehr ber havingA n slot through which the shaft projects.

Si. A device ol the character described, iniving :in axle Shaft. at wheel, menne carried by the shnfit for driving' the wheel. Such drivv ing menne permitting relative movement of the Shaft und wheel While in driving rele.-

tion, and u member carried by the Wheel and capable of movement relatively thereto, there being e slot in the member through which the .shaft projects, said slot bein eccentric to the shaft whereby the shaft Wil be retained in driving relation to the Wheel while permitting relative movement of the wheel and Shaft.

A device of the character described, lmviingr :in axle shaft, .L Wheel, mesme carried by the shaft for drivin the Wheel, such drivin means permitting relative movement oil the sli-Lft und Wheel while in driving relation, a member carried by the Wheel and capable of movement relatively thereto. there being a slot in the member through which the shaft projects, said slot being eccentric to the shaft Whereb the shaft will be retained in drivin relation to the wheel while permittin ment of the wheel and she and means for preventing rotation of the member.

This specification signed and witnessed this 16th dey of October, 1916.

DANIEL C. SLAGHT. Witnesses J. L. VVICKKISE, HENRY F. RICHTER.

re etive move-v 

